Original magnetic alignment of a nematic phase containing single-walled nanotubes

Dispersions of single-walled carbon nanotubes in a 4-pentyl-4'-cyano-biphenyl nematic liquid crystal matrix are studied by X-ray scattering. For some mixtures, the addition of nanotubes strongly modifies the properties of the matrix: under a magnetic field, the nematic director is aligned perpe...

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Bibliographic Details
Published in:	Journal of nanoscience and nanotechnology Vol. 4; no. 1-2; p. 86
Main Authors:	Da Cruz, C, Launois, P, Veber, M
Format:	Journal Article
Language:	English
Published:	United States 01-01-2004
Subjects:	Anisotropy Biphenyl Compounds - chemistry Colloids - chemistry Colloids - radiation effects Crystallization - methods Electromagnetic Fields Materials Testing - methods Molecular Conformation Motion Nanotechnology - methods Nanotubes, Carbon - chemistry Nanotubes, Carbon - radiation effects Nanotubes, Carbon - ultrastructure Nitriles - chemistry Phase Transition
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Summary:	Dispersions of single-walled carbon nanotubes in a 4-pentyl-4'-cyano-biphenyl nematic liquid crystal matrix are studied by X-ray scattering. For some mixtures, the addition of nanotubes strongly modifies the properties of the matrix: under a magnetic field, the nematic director is aligned perpendicular to the field, whereas it is parallel to it for pure 4-pentyl-4'-cyano-biphenyl. This original modification of liquid crystal alignment by the addition of nanotubes raises new questions about nanotubes and liquid crystal interactions.
ISSN:	1533-4880
DOI:	10.1166/jnn.2004.043